I have an old MS wireless optical mouse 2.0 on an XP. It has worked flawlessly for years, but in the past week it has gotten freaky. If I grab a window to move by the bar at the top, unless I move it very slowly, it will expand the window to fill the screen as though I had double clicked the bar. When playing solitaire, if I grab a card to move, it slips out of the mouse's grasp unless I drag it very slowly. Highlighting text by dragging the mouse over it has become very frustrating. It's almost like the right button has a loose connection. I've tried slowing the double-click speed and the drag speed. I've also replaced the batteries twice. Nothing helps. Is it possible something in the mouse or mouse button has worn out and it just needs replacing? I remember having to clean lint off the rollers in the old mouse, but see nothing mechanical to account for the wild behavior on the optical one.